Operation Manual
T
TI
IM
ME
E
S
SI
IG
GN
NA
AL
L
R
RE
EP
PE
EA
AT
TE
ER
R
Masibus Automation & Instrumentation Pvt. Ltd.
B/30, GIDC Electronics Estate,
Sector-25, Gandhinagar-382044, Gujarat, India
Ph: 91-079-23287275 / 76 / 77 / 78 / 79
Fax: 91-079-23287281/ 82
Email: cust_support@masibus.com
Web: www.masibus.com
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 1 of 15
Table of Contents
1. INTRODUCTION ............................................................................................................................................... 3
1.1 Purpose of the Manual ...................................................................................................................................... 3
1.2 Product over View / Description: ..................................................................................................................... 3
2. SAFETY / WARNING PRECAUTIONS ......................................................................................................... 4
2.1 Safety Precautions ............................................................................................................................................. 4
2.2 Warning Precautions ............................................................................................................................. 4
3.0 Time Signal Repeater ........................................................................................................................................ 5
3.1 Features ...................................................................................................................................................... 5
3.2 Time and Event Signals (Input / Output):............................................................................................... 5
3.3 Individual Specification ............................................................................................................................ 6
3.3.1 1PPS / IRIG B TTL Module .................................................................................................................. 6
3.3.2 IRIG B Modulation Module .................................................................................................................. 6
3.3.3 RS232/RS485 Module ........................................................................................................................... 7
3.3.4 EVENT module ..................................................................................................................................... 7
3.3.5 Physical .................................................................................................................................................. 7
3.3.6 Environmental........................................................................................................................................ 7
3.3.7 Interface ................................................................................................................................................. 7
3.3.8 Power Supply ......................................................................................................................................... 7
4.0 COMMUNICATION DETAIL ........................................................................................................................ 8
4.1 The 1PPS Signal ................................................................................................................................................. 8
4.2 The Event Signal ................................................................................................................................................ 8
4.3 The IRIG-B Signal ............................................................................................................................................. 8
4.4 RS-232 Outputs ................................................................................................................................................ 10
4.4.1 NMEA Format ..................................................................................................................................... 10
4.4.2 NGTS Format ...................................................................................................................................... 11
4.4.3 T-Format .............................................................................................................................................. 11
5.0 SPECIFICATION ........................................................................................................................................... 13
5.1 COMMON FEATURES ................................................................................................................................. 13
5.2 INDIVIDUAL MODULE SPECIFICATION ............................................................................................... 13
5.2.1 1PPS / IRIG B TTL Module ........................................................................................................................ 13
5.2.2 IRIG B MODULATION MODULE ........................................................................................................... 14
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 2 of 15
5.2.3 RS-232/RS-485 Module ................................................................................................................................ 14
5.2.4 EVENT MODULE ....................................................................................................................................... 15
6.0 Installation Guide ............................................................................................................................................ 16
Note:
Information in this manual is subject to change without prior notice or permission
.
Warning Symbol
The symbol calls attention to the operating procedure, practice or the like which if not correctly performed or
adhered to , could result in personal injury or damage to or destruction of part or all of the product and system.
Do not proceed beyond a warning symbol until the indicated condition are fully understood and met.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 3 of 15
1. INTRODUCTION
1.1 Purpose of the Manual
How to read this manual???
Installer: Read Chapters 1, 3.
System Designer and New User: Read All Chapters
Expert User: Read Chapters 3, 4, 5.
Regarding This User’s Manual
A) This manual should be provided to the end user. Keep an extra copy or copies of the manual in a
safe place.
B) Read this manual carefully to gain a thorough understanding of operating this product before
starting operation.
C) This manual describes the functions of this product. Masibus does not guarantee the application of
these functions for any particular purpose.
D) Under absolutely no circumstances may the contents of this manual, in part or in whole, be
transcribed or copied without permission.
1.2 Product over View / Description:
A) Time Signal Repeater is housed in 1U/21T wall mounted (Optional-Din Rail mount) package
B) Time Signal Repeater (TSR) is an analog system that accepts signals like 1PPS, IRIGB TTL,
IRIGB Modulated and RS-232 from GPS Clock Product and gives four number of isolated
outputs of each signal same as input.
C) There are five different types of modules available such as 1PPS, IRIG-B TTL, RS- 232,
EVENT and IRIG-B MODULATION.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 4 of 15
2. SAFETY / WARNING PRECAUTIONS
2.1 Safety Precautions
Dangerous voltages capable of causing death are sometimes present in this instrument. Before
installation or beginning of any troubleshooting procedures the power to all equipment must be
switched off and isolated. Units suspected of being faulty must be disconnected and removed first
and brought to a properly equipped workshop for testing and repair. Component replacement
and interval adjustments must be made by a company person only.
2.2 Warning Precautions
A) Before wiring, verify the label for correct model number and options.
B) Wiring must be carried out by personnel, who have basic electrical knowledge and practical
experience.
C) All wiring must be confirmed to appropriate standards of good practice and local codes and
regulations. Wiring must be suitable for voltage, current, and temperature rating of the system.
D) Beware not to over-tighten the terminal screws.
E) Verify that the ratings of the output devices and the inputs as specified in Chapter 5 are not
exceeded.
F) Upon receipt of the shipment remove the unit from the carton and inspect the unit for shipping
damage. If any damage due to transit, report and claim with the carrier. Write down the model
number and serial number for future reference when corresponding with our Customer Support
Division.
G) Do not use this instrument in areas such as excessive shock, vibration, dirt, moisture, corrosive
gases or rain. The ambient temperature of the areas should not exceed the maximum rating
specified.
H) Provide power from a DC power supply.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 5 of 15
3.0 Time Signal Repeater
Figure 1: Time Signal Repeater-TSR
3.1 Features
The masibus make Time Signal Repeater (TSR) generates multiple output from given
input. TSR also amplifies & isolate outputs.
Reliable and cost effective
Slim wall mount enclosure
Different models are available for
o IRIG-B modulated
o IRIG-B TTL
o RS-232
o 1PPS
o EVENT
o NTP
High intensity LEDs for input, output & power indication
Reverse Polarity Protection for Power Supply
Isolation between input & output
Isolation between Each outputs
3.2 Time and Event Signals (Input / Output):
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 6 of 15
Output Signal Description(GPS clock O/P) Isolation
Max
Distance* Connector
Maximum
Output
1PPS
•
1 Pulse per second
• TTL into 250Ω
1500 VAC Isolation
from all other ports,
input and output and
power supply
50m Input &
Output: BNC
Female 4
IRIG B
TTL
(5V)
•
TTL into 50Ω 50m Input &
Output: BNC
Female 4
IRIG
-
B
Modulated
•
Format: IRIG-B12X.
• Carrier Freq: 1KHz Sine
• Modulation Ratio: 3:1
• 3Vp-p into 100Ω ±10% 1000 m Input &
Output: BNC
Female 4
RS232
/RS485
•
Isolated Serial RS232/RS485
• DB-9 Female connector 15m
Input &
Output: DB9
Female 4
EVENT
•
Selectable between
1PPS/1PPM/1PPH
• Voltage rating: 350 VDC level,
120mA 50m Input &
Output: Plug in
connector 4
NTP
(LAN Interface)
•
Time synchronization protocol:
NTP V3, SNTP
• Network Protocol: TCP, Telnet,
UDP, IPV4
• RJ 45, 10Mbps
NA Input: DB9
Female
Output: RJ-45 4
*The maximum distance to which an IRIG-B TTL/PPS signal can be transmitted depend on number of factors like Type of
cable, Environmental noise, receiver loads, etc
3.3 Individual Specification
3.3.1 1PPS / IRIG B TTL Module
The input pulse is distributed without any change in polarity or duration.
3.3.2 IRIG B Modulation Module
a) In input the equipment receives fixed amplitude analog signal from an external
IRIG-B source.
b) When detecting an input signal, the LED SIGNAL turns ON. The amplified signal is
distributed over the 4 isolated outputs of the equipment.
c) Each of the four outputs could be adjusted. These settings are the gain of each
output amplifier.
d) The gain of each amplifier is adjusted by a dedicated potentiometer accessible
from bottom.
e) The output level is independently settled for each type of output.
f) Output Impedance: 100Ω
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 7 of 15
3.3.3 RS232/RS485 Module
a) The Time Signal Repeater allows ASCII frame distribution on 4 serial tracks in
compliance with RS232 standard.
b) The output data are diffused with the same characteristics of the available input
data.
c) Transfer speed, parity or number of data bits, couldn’t be changed.
3.3.4 EVENT module
a) Four potential free relay outputs are available on the front facia of the card.
b) Inverted event logic output. (refer jumper setting in Product manual)
3.3.5 Physical
Mounting Wall / Din-Rail Mounting
Dimensions (W x H x D) 302 x 106 x 44 mm, For detail refer Mechanical Drawing for Enclosure
Ingress protection IP20
Weight 1 Kg.
3.3.6 Environmental
Operating temperature 0 to +55 °C
Storage temperature -20 to +80 °C
Humidity 20-90% Non Condensing
3.3.7 Interface
Display LED
•
Power LED
• Individual Status LED per Output
3.3.8 Power Supply
Power supply 24V DC
Power consumption < 10 W with standard input option
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 8 of 15
4.0 COMMUNICATION DETAIL
4.1 The 1PPS Signal
This is a very important timing signal. It is the TTL level pulse with a width of 200ms isolated output
coming from the GPS receiver. This 1PPS is connected to the BNC connector on the top panel.
4.2 The Event Signal
The signal is an isolated event output through a static relay contact. This signal is connected to two of
the terminal of the MSTB connector on the top side of the Instrument. The event is assigned as isolated
event; the frequency for this event can be configured from GPS receiver as 1 minute or 1 hour. The
pulse width of the event is 2 second.
4.3 The IRIG-B Signal
The IRIG-B format is a serial format based on a message frame per second which is Co-ordinate with
the synchronized 1PPS time output pulse. There are two alternative forms of output, a dc level shift
output, and a modulated output. The modulation frequency is 1 KHz.
For each form of output there are three output codes:-
a. A Reference Mark
b. A logical 1
c. A logical 0
For IRIG-B, each one of these codes is 10 ms long, which is 10 cycles for the modulated format. There
are 100 possible codes per time frame, although not all of them are used. The code sequence is shown
in Table 1, and the waveforms shown in Figure 2. The day number starts at 1 on the first of January.
The output voltage of the modulated waveform is 3 V peak to peak into a 100 ohms load. The dc level
output is TTL standard and the rising edge of the pulse is "On Time". 1 kHz modulated IRIG-B signal
is connected to BNC on the top of the device. IRIG-B TTL level signal is connected to a BNC
connector on the top of the device.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 9 of 15
Position Type Item Digit Position Type Item Digit
0 Reference Mark 27 to 28 Logical 0
1 Signal Seconds 1 29 Reference Mark
2 Signal Seconds 2 30 Signal Day 1
3 Signal Seconds 4 31 Signal Day 2
4 Signal Seconds 8 32 Signal Day 4
5 Logical 0 33 Signal Day 8
6 Signal Seconds 10 34 Logical 0
7 Signal Seconds 20 35 Signal Day 10
8 Signal Seconds 40 36 Signal Day 20
9 Reference Mark 37 Signal Day 40
10 Signal Minutes 1 38 Signal Day 80
11 Signal Minutes 2 39 Reference Mark
12 Signal Minutes 4 40 Signal Day 100
13 Signal Minutes 8 41 Signal Day 200
14 Logical 0 42 to 48 Logical 0
15 Signal Minutes 10 49 Reference Mark
16 Signal Minutes 20 50 to 58 Logical 0
17 Signal Minutes 40 59 Reference Mark
18 Logical 0 60 to 68 Logical 0
19 Reference Mark 69 Reference Mark
20 Signal Hours 1 70 to 78 Logical 0
21 Signal Hours 2 79 Reference Mark
22 Signal Hours 4 80 to 88 Logical 0
23 Signal Hours 8 89 Reference Mark
24 Logical 0 90 to 98 Logical 0
25 Signal Hours 10 99 Reference Mark
26 Signal Hours 20
Table 1 – IRIG B Code Sequence
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 10 of 15
Figure 2: IRIG B Modulated Signal
4.4 RS-232 Outputs
On serial port 9 ways D-type socket, the message is NMEA ($GPRMC) format, NGTS or T-FORMAT.
4.4.1 NMEA Format
RMC RECORD FORMAT
The $GPRMC sentence contains time and date of position fix, speed and course information. The
following examples show the contents of a typical RMC sentence:
The settings for this serial format is 4800, 8, N, 1.
The full data message of this format shall consist of data fields as follows:
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 11 of 15
Field Example Comments
Sentence ID $GPRMC,
UTC Time 130525.00, hhmmss.ss,
Status A, A = Valid/V = Invalid,
Latitude 4250.5589, ddmm.mmmm,
N/S Indicator S, N = North/S = South,
Longitude 14518.5084, dddmm.mmmm,
E/W Indicator E, E = East/W = West,
Speed over ground 000.1, Knots,
Course over ground 245.0, Degrees,
UTC Date 291206, DDMMYY,
Magnetic variation , Degrees,
Magnetic variation , E = East/W = West,
Checksum *25 *CC
Terminator <CR><LF> Non-printing characters
Table 2: RMC Record Selection
4.4.2 NGTS Format
The settings for this format are programmable. The full data message of NGTS format shall consist of
14 printable characters and a concluding CRLF as follows:
Description Number of
Characters Character
Position Range of
Value/Information
Code Identification 1 1 Capital T
Year in Century 2 2,3 0 to 99
Month 2 4,5 1 to 12
Day of Month
2
6,7
1 to 31
Day of Week
1
8
1 to 7
Hours 2 9,10 0 to 23
Minutes 2 11,12 0 to 59
GMT Marker 1 13 0 or 1
Validity Marker 1 14 0 or 1
CRLF
2
15,16
Non
-
printing character
Table 3: NGTS Format
The transmission sequence shall be from the Code Identification character through to the CRLF with
the most significant digits being transmitted first.
The message shall become automatically available at one second prior to the clock minute epoch.
4.4.3 T-Format
The settings for this format are programmable. The full data message of T-format shall consist of 21
printable characters with a concluding CRLF as follows:
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 12 of 15
Description Number of
Characters Character
Position Range of
Value/Information
Code Identification 1 1 Capital T
Divider 1 2 :
Year in Century 2 3,4 0 to 99
Divider 1 5 :
Month
2
6,7
1 to 12
Divider
1
8
:
Day of Month 2 9,10 1 to 31
Divider 1 11 :
Day of Week 1 12 1 to 7
Divider 1 13 :
Hours
2
14,15
0 to 23
Divider
1
16
:
Minutes 2 17,18 0 to 59
Divider 1 19 :
GMT Marker 1 20 0 or 1
Validity Marker 1 21 0 or 1
CRLF
2
22,23
Non prin
ting character
Table 4: T- Format
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 13 of 15
5.0 SPECIFICATION
5.1 COMMON FEATURES
The Masibus GPS signal Repeater amplifies & repeat different outputs as connected to it rear side.
A) The equipment is housed in a compact 1U/21T rack mounted (Optional: Din Rail Mounted)
package.
B) LED’s are located to show the equipment status.
C) A LED for power supply ON indication
D) Input signal is on the top side and all the output signals are located on the bottom side of the
equipment.
E) The equipment take power 24V DC by Allied MSTB 5.08 connector.
5.2 INDIVIDUAL MODULE SPECIFICATION
5.2.1 1PPS / IRIG B TTL Module
A) 5V TTL input level on BNC connector.
B) 4 numbers of 5V TTL isolated outputs level on BNC connector.
C) 4 common LEDs to show the status of each output.
D)
The input pulse is distributed without any change in polarity or duration.
E) Maximum Distance: 50 meters*
F) Isolation of 1.5KV AC between Power to Output, Input to Output and Output to Output.
*The maximum distance to which an IRIG-B TTL/PPS signal can be transmitted depend on
number of factors like Type of cable, Environmental noise, receiver loads, etc
.
1 PPS / IRIG B
TTL Input Buffer and
Distribution Circuit Isolator Circuit
Isolator Circuit
Isolator Circuit
Isolator Circuit
1 PPS1/
IRIGB
TTL 1
1 PPS2/
IRIGB
TTL 2
1 PPS3/
IRIGB
TTL 3
1 PPS4/
IRIGB
TTL 4
Figure 3: Block Diagram of 1PPS / IRIG B TTL Module
Fig.3 shows the block diagram of the 1PPS/IRIG-B TTL module. The input of the module is
buffered by the buffer and then four isolated outputs are provided.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 14 of 15
5.2.2 IRIG B MODULATION MODULE
A) Time Code Amplifier and distributor provide analog IRIG B or any other format, Time code
amplification and distribution. The time codes are based on a 1 kHz amplitude modulated
(1/3) sine wave carrier.
B) In input the equipment receives an analog signal from an external IRIG B source.
C) When detecting an input signal, the LED SIGNAL turns ON. The amplified signal is isolated
and distributed over the 4 outputs of the equipment.
D) Each of the four isolated outputs could be adjusted. These settings are the gain of each output
amplifier.
E) The gain of each amplifier is adjusted by a dedicated potentiometer.
F) The output level is independently settled for each type of output.
G) The analog time code signal connector is a base female BNC. The input circuit impedance is
more than 600 .
H) 1 KHz AM Signal
I) 3:1 Modulation Ratio
J) Output Impedance is more than 100.
K) Isolation of 1.5KV AC between Power to Output, Input to Output and Output to Output.
IRIGB Modulated
Input Amplifier Circuit Isolator Circuit
Isolator Circuit
Isolator Circuit
Isolator Circuit
Amplifier Circuit
Amplifier Circuit
Amplifier Circuit
Amplifier Circuit
IRIGB
Modulati
on 1
IRIGB
Modulati
on 2
IRIGB
Modulati
on 3
IRIGB
Modulati
on 4
Gain
Control 1
Gain
Control 2
Gain
Control 3
Gain
Control 4
Figure 4: Block Diagram of IRIG B Modulation Module
Fig.4 shows the block diagram of the IRIG-B Modulation Module. Input of the module is first
amplified by the amplified circuit then it is divided in to four isolated output with gain control
circuit.
5.2.3 RS-232/RS-485 Module
a) The Time frame distributor allows ASCII frame distribution on
b) 4 serial tracks in compliance with RS-232 standard.
c) A One LED shows that power supply is ON.
d) The output data are diffused with the same characteristics of the available input data.
e) Transfer speed, parity or number of data bits, couldn’t be changed.
f) 1 input to 4 isolated outputs mode.
g) The input connectors are SUB'D 9 pins female and outputs are female type.
h) Isolation of 1.5KV AC between Power to Output, Input to Output and Output to Output.
i) DB9 Female Connectors
j) Maximum Distance of 50’, maximum distance depends on signal baud rate & quality of cable.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 15 of 15
Figure 5: Block Diagram of RS 232 Module
Fig.5 shows the block diagram of the RS-232 Module. Input of the module is first converted in
TTL level then it is divided in to four isolated output and then it is converted in to RS-232 format
output.
5.2.4 EVENT MODULE
A) 1 input 4 outputs.
B) Four potential free relay outputs are available on the bottom of the module.
C) 4 LED’s are available which shows the status of each event.
D) One power LED shows status of the power of the module.
E) Inverted event logic output. (refer jumper setting)
F) 350 V, 120mA maximum
G) Isolation of 2000 M at 500 VDC between Power to Output, Input to Output and Output to
Output
EVENT Input
Selection Circuit
for Inverted or
Noninverted
EVENT
Isolator Relay
Output
Isolator Relay
Output
Isolator Relay
Output
Isolator Relay
Output
EVENT 1
EVENT 2
EVENT 3
EVENT 4
Figure 6: Block Diagram of EVENT Module
Fig.6 shows the block diagram of the EVENT Module. Input of the module is first given to
selection and inverter circuit then output of this block is divided in to four isolated output.
Time Signal Repeater
masibus
Ref No: m03A/om/101
Issue No: 01
Operator’s Manual
Page 16 of 15
6.0 Installation Guide
Figure 7: Din Rail Mounting
Installation Steps
• Complete the following steps to install the DIN rail mount device:
1. Clip the top side of the mounting device on the DIN rail first.
2. First Push the top side of the device and then push from front side towards the DIN
rail.
• The mounting devices can be removed from the rail by two steps:
1. First Push the top side of the device and then pull from front side towards outside the
DIN rail.
2. Take the top side of the mounting device from the DIN rail.
/
